1668333516685 has 32 divisors (see below), whose sum is σ = 2206827504000. Its totient is φ = 1200655196160.

The previous prime is 1668333516659. The next prime is 1668333516697. The reversal of 1668333516685 is 5866153338661.

It is not a de Polignac number, because 1668333516685 - 2⁷ = 1668333516557 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47191746 + ... + 47227084.

It is an arithmetic number, because the mean of its divisors is an integer number (68963359500).

Almost surely, 2^{1668333516685} is an apocalyptic number.

It is an amenable number.

1668333516685 is a deficient number, since it is larger than the sum of its proper divisors (538493987315).

1668333516685 is a wasteful number, since it uses less digits than its factorization.

1668333516685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44301.

The product of its digits is 55987200, while the sum is 61.

The spelling of 1668333516685 in words is "one trillion, six hundred sixty-eight billion, three hundred thirty-three million, five hundred sixteen thousand, six hundred eighty-five".